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Sanyo H3ELM Service Manual

Remote control digital color televesion
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SERVICE MANUAL

Contents
Safety Instructions . . . . . . . . . . . . . . . . . . 2
Service Adjustments . . . . . . . . . . . . . 3 - 17
Service Hints . . . . . . . . . . . . . . . . . . . . . . 18
Mechanical Disassemblies. . . . . . . . . . . 19
Chassis Electrical Parts List . . . . . . 20 - 40
Cabinet Parts List . . . . . . . . . . . . . . . . . . 41
Locations . . . . . . . . . . . . . . . . . . . 42 - 49
Block Diagrams . . . . . . . . . . . . . . . . 50 - 55
Troubleshooting Flow Charts . . . . . 56 - 58
Control Port Function . . . . . . . . . . . . . . . 59
Schematic Inserts . . . . . . . . . . . . . . 61 - 76
Schematic Notes . . . . . . . . . . . . . . . . . 61
Pin Layouts . . . . . . . . . . . . . . . . . . . . . 61
Waveforms. . . . . . . . . . . . . . . . . . 62 - 64
Main Board. . . . . . . . . . . . . . . . . . 65 - 68
A/V Select and Video Boards . . . 69 - 72
VM Board . . . . . . . . . . . . . . . . . . . . . . . 73
CRT Socket Board . . . . . . . . . . . . . . . . 73
Power and Deflection Board. . . . 74 - 76
Front Board . . . . . . . . . . . . . . . . . 74 - 75
HT32744, H3ELM, PRODUCT CODE 111369990
Remote Control Digital
Color Television

Specifications

Power Rating . . . . . . . . . . . . . . . . . . . . . 120V, 60Hz
Antenna Input Impedance . . . . . . . . . . . . . . . . . 75Ω
Receiving Channel . . . . . . . . . . . . . . . . 2 - 13 (VHF),
Remote Ready . . . . . . . . . . 52 Key Remote Control
Sound Output . . . . . . . . . . . . . . . . . . . . . . 5.0 W/CH
Intermediate Frequency
Picture Tube. . . . . . . . . . . . . . . . . . . A80ERF082X44
Semiconductors
Cabinet Dimensions
AS
FILE NO.
HT32744
ORIGINAL VERSION
Chassis No. 32744-00
NOTE: Match the Chassis No. on
the unit's back cover with
the Chassis No. in the
Service Manual.
If the Original Version
Service Manual Chassis
No. does not match the
unit's, additional Service
Literature is required. You
must refer to "Notices" to the
Original Service Manual
prior to servicing the unit.
140W (Avg), 2.5A (Max)
01, 14 - 94, 95 - 125 (CATV)
Picture IF Carrier . . . . . . . . . . . . . . . . . . 45.75MHz
Sound IF Carrier . . . . . . . . . . . . . . . . . . 41.25MHz
Color Sub Carrier . . . . . . . . . . . . . . . . . 42.17MHz
Integrated Circuits . . . . . . . . . . . . . . . . . . . . . . . 40
Transistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Except within Tuner, RC Pre-Amp. & Digital Module
Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 888 mm
Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . 687 mm
Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 570 mm
REFERENCE No.
(U.S.A.)
(CANADA)
UHF/VHF/CATV
Digital
14 - 69 (UHF),
1 - 99 (Digital)
SM
780095

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Summary of Contents for Sanyo H3ELM

  • Page 1: Table Of Contents

    Height ......687 mm Depth ......570 mm HT32744, H3ELM, PRODUCT CODE 111369990 REFERENCE No.

  • Page 2: Safety Instructions

    SAFETY INSTRUCTIONS SAFETY PRECAUTIONS WARNING: The chassis of this receiver has a floating READING SHOULD NOT EXCEED 750 mV. AC VOLTMETER ground with the potential of one half the AC line voltage in (5000 ohms per volt or more sensitivity) respect to earth ground.

  • Page 3: Service Adjustments

    SERVICE ADJUSTMENTS GENERAL This set has an On-screen Service Menu system included in the CPU that allows remote operation for most of the service adjustments. ON-SCREEN SERVICE MENU SYSTEM 1. Enter the Service Menu: • While pressing the – VOLUME key on the front control panel, XXXXXXXXXXX reconnect the AC power cord.
  • Page 4 SERVICE ADJUSTMENTS (Cont.) INITIAL BUS DATA SETUP (Cont.) 15. Select NO. 117 VPS (V Position) with key. Adjust the data with number keys for 64. 16 Select NO. 119 HSI2UUC (H Size / Up UCP) with key. Adjust the data with number keys for 48. 17.
  • Page 5 Table 1. ON-SCREEN SERVICE MENU When IC802 (EEPROM) is replaced, check the bus data to confirm they are the same as below. The shaded menu should be checked and be set up or readjusted according to the procedures described in the following pages. Initial Setup Data marked with an * should be changed from Initial Reference Data.
  • Page 6 SERVICE ADJUSTMENTS (Cont.) Table 1. ON-SCREEN SERVICE MENU (Continued) INITIAL REFERENCE INITIAL SETUP INITIAL SETUP TITLE FUNCTION DATA HEX DATA HEX DATA BINARY 1I-CON 00000000 1125I CONTRAST 7P-CON 00000000 720P CONTRAST D-CON 00000000 DIGITAL CONTRAST W-CON 00000000 LETTER BOX CONTRAST RF-HUE 00000000 TINT...
  • Page 7 INITIAL REFERENCE INITIAL SETUP INITIAL SETUP TITLE FUNCTION DATA HEX DATA HEX DATA BINARY RF-CMD 00000000 RF CTI_MODE(0) 4I-CMD 00000000 480I CTI_MODE(0) 4P-CMD 00000000 480P CTI_MODE(0) 1I-CMD 00000000 1080I CTI_MODE(0) 7P-CMD 00000000 720P CTI_MODE(0) D-CMD 00000000 DIGITAL CTI_MODE(0) 1I-GAM 00000010 1125I ÇfAMMA(1-0) RF-LMD 00000000...
  • Page 8 SERVICE ADJUSTMENTS (Cont.) Table 1. ON-SCREEN SERVICE MENU (Continued) INITIAL REFERENCE INITIAL SETUP INITIAL SETUP TITLE FUNCTION DATA HEX DATA HEX DATA BINARY 4P-RYB 00001000 480P RYB(3-0) 1I-RYB 00001000 1080I RYB(3-0) 7P-RYB 00001000 720P RYB(3-0) D-RYB 00001000 DIGITAL RYB(3-0) RF-GYR 00001000 RF GYR(3-0) 4I-GYR...
  • Page 9 INITIAL REFERENCE INITIAL SETUP INITIAL SETUP TITLE FUNCTION DATA HEX DATA HEX DATA BINARY CFHSI 00000000 VIDEO1/2-FULL H_SIZE CFHPO 00000000 VIDEO1/2-FULL H_POSITION CFLBK 00000000 VIDEO1/2-FULL L_BLK CFRBK 00000000 VIDEO1/2-FULL R_BLK CFVAS 00000000 VIDEO1/2-FULL V_ASPECT CFVSR 00000000 VIDEO1/2-FULL V_SCROLL CWUBK 00001000 VIDEO1/2-LETTER BOX LO_BLK CWLBK 00001011...
  • Page 10 SERVICE ADJUSTMENTS (Cont.) Table 1. ON-SCREEN SERVICE MENU (Continued) INITIAL REFERENCE INITIAL SETUP INITIAL SETUP TITLE FUNCTION DATA HEX DATA HEX DATA BINARY 7PLBK 00000000 720P-FULL LO_BLK 7PVS 00000000 720P-FULL V_SIZE 7PVPS 00000000 720P-FULL V_POSITION 7PHSI 00000000 720P-FULL H_SIZE 7PHPO 00000000 720P-FULL H_POSITION 7PLBK...
  • Page 11 INITIAL REFERENCE INITIAL SETUP INITIAL SETUP TITLE FUNCTION DATA HEX DATA HEX DATA BINARY RZVAS 00000000 RF-ZOOM V_ASPECT RZZSW 00000000 RF-ZOOM ZOOM_SW RZVSR 00000000 RF-ZOOM V_SCROLL 00000000 RF PRELIMINARY CZVS 00000000 VIDEO1/2-ZOOM V_SIZE CZVPS 00000000 VIDEO1/2-ZOOM V_POSITION CZVAS 00000000 VIDEO1/2-ZOOM V_ASPECT CZVSR 00000000 VIDEO1/2-ZOOM V_SCROLL...
  • Page 12 SERVICE ADJUSTMENTS (Cont.) Table 1. ON-SCREEN SERVICE MENU (Continued) INITIAL REFERENCE INITIAL SETUP INITIAL SETUP TITLE FUNCTION DATA HEX DATA HEX DATA BINARY DWLBK 00001011 DIGITAL-LETTER BOX LO_BLK DWVS 00000000 DIGITAL-LETTER BOX V_SIZE DWVPS 00000000 DIGITAL-LETTER BOX V_POSITION DWVBS 00000001 DIGITAL-LETTER BOX VBLK_SW DWVAS 00010010...
  • Page 13 INITIAL REFERENCE INITIAL SETUP INITIAL SETUP TITLE FUNCTION DATA HEX DATA HEX DATA BINARY 00010000 AKB DETECT TIME 00000000 NOT AVAILABLE 00000000 NOT AVAILABLE 00000000 NOT AVAILABLE – R/B DRIVE – – – R / B DRIVE LEVEL ADJUSTMENT – SCREEN –...
  • Page 14 SERVICE ADJUSTMENTS (Continued) ANTENNA CONNECTIONS VERTICAL SIZE ADJUSTMENT This receiver is designed for UHF/VHF and Digital RF recep- 1. Tune receiver to an active analog channel. tion. A 75 ohm terminal is provided for UHF/VHF reception 2. Check the vertical size of the picture. If the vertical size and a separate 75 ohm terminal is provided for Digital RF is too large or small, perform steps 3 ~ 6.
  • Page 15 Drive Level Adjustment 7. Set the data with numeric key to 2E with numeric keys. 8. Select NO. 10D (SCO4: Sub Contrast, Bit 7 - 4) with 13. Select “Drive Level Adjustment” Menu (between key. NO. 08E and NO. 0B0) with key.

  • Page 16: Input Level Adjustment

    SERVICE ADJUSTMENTS (Continued) HIGH VOLTAGE HOLD-DOWN TEST MULTI-SOUND SECTION ADJUSTMENTS Every time the receiver is serviced, the HIGH VOLTAGE Note: Multi-Sound Section must be adjusted after HOLD-DOWN circuit must be tested for proper operation by A101 (U/V Tuner), IC3601 (MTS Decoder), Digital following these steps: Module or IC802 (EEPROM) is replaced.

  • Page 17: Main Board

    PINCUSHION CORRECTION ADJUSTMENT OSD ADJUSTMENT 1. Connect a color-bar generator to the analog antenna 1. Connect a color-bar generator to the analog antenna terminal and select a crosshatch pattern. terminal. 2. Set the picture controls to the Sports level. 2. Set the picture controls to the Sports level. 3.

  • Page 18: Service Hints

    SERVICE HINTS POWER FAILURE DETECTOR This unit is equipped with a Power Failure Detector function included in the CPU which checks for an abnormal condition in the chassis power supplies, including the power supply derived from the Horizontal Output Transformer. If, while the power is on, a failure is caused by any of the following that results in a low voltage supply, the CPU will turn the unit off in 1.5 seconds to prevent further damage: •...

  • Page 19: Mechanical Disassemblies

    MECHANICAL DISASSEMBLIES CHASSIS REMOVAL CABINET BACK REMOVAL 1. Remove cabinet back. 1. Refer to Figure 1, remove 13 screws. 2. Discharge the picture tube anode (2nd anode lead) to the 2. Pull off cabinet back and remove. dag coating (picture tube grounding lead). 3.

  • Page 20: Chassis Electrical Parts List

    CHASSIS ELECTRICAL PARTS LIST CAUTION: To Protect against electrical shock and for continued product safety, refer to SAFETY PRECAUTIONS, X-RADIATION PRECAUTIONS, HIGH VOLTAGE HOLD-DOWN TEST, and PRODUCT SAFETY NOTICE on Page 2. PRODUCT SAFETY NOTICE PRODUCT SAFETY SHOULD BE CONSIDERED WHEN A REPLACEMENT IS MADE IN ANY AREA OF A RECEIVER. COMPONENTS INDICATED BY A STAR ( ) IN THIS PARTS LIST AND THE SCHEMATIC DIAGRAM DESIGNATE COMPONENTS IN WHICH SAFETY CAN BE OF SPECIAL SIGNIFICANCE.
  • Page 21 Schematic Schematic Part No. Part No. Description Description Location Location MAIN PC BOARD C863 404 084 3801 ELECT 1U M C864 403 235 6203 CERAMIC 0.01U Z CAPACITORS C865 404 084 2507 ELECT 47U M C100 403 224 6108 CERAMIC 0.01U K C866 404 084 3801...
  • Page 22 Schematic Schematic Part No. Description Part No. Description Location Location C3403 404 084 3801 ELECT 1U M D664 407 012 4406 DIODE 1SS133 C3404 404 084 3801 ELECT 1U M D665 407 012 4406 DIODE 1SS133 C3406 403 343 4603 CERAMIC 0.022U K D672...
  • Page 23 Schematic Schematic Description Description Part No. Part No. Location Location COILS Q1293 405 014 4509 TR 2SC2412K-T-96-R 405 014 4608 TR 2SC2412K-T-96-S L001 645 008 2894 INDUCTOR, 5.6U K 405 015 8724 TR 2SC2812-L6-TB 645 016 3104 INDUCTOR, 5.6U K 405 015 8922 TR 2SC2812-L7-TB L101...
  • Page 24 Schematic Schematic Part No. Description Part No. Description Location Location Q2910 (Cont.)405 163 1602 TR 2SC2812N-L6-TB Q5501 405 014 4509 TR 2SC2412K-T-96-R 405 163 1701 TR 2SC2812N-L7-TB 405 014 4608 TR 2SC2412K-T-96-S 405 173 9803 TR 2SC3928A1R 405 015 8724 TR 2SC2812-L6-TB 405 173 9902 TR 2SC3928A1S...
  • Page 25 Schematic Schematic Description Description Part No. Part No. Location Location R833 401 256 3805 MT-GLAZE 1.5K JA 1/10W R1296 401 256 7209 MT-GLAZE 18K JA 1/10W R834 401 162 3708 MT-GLAZE 4.7K JA 1/10W R1297 401 256 4109 MT-GLAZE 56 JA 1/10W R835 401 162 3708 MT-GLAZE...
  • Page 26 47P K 500V MISCELLANEOUS C513 403 075 8009 CERAMIC 0.01U K 500V A100 610 312 3240 ASSY, PWB, MAIN-H3ELM C511 403 142 9502 POLYESTER 0.068U K 100V A101 645 064 2555 TUNER, TU/IF 403 289 0806 POLYESTER 0.068U K 100V...
  • Page 27 Schematic Schematic Part No. Part No. Description Description Location Location C622 404 085 4500 ELECT 2200U M 407 100 0303 ZENER DIODE MTZJ36B C624 404 096 2403 ELECT 470U M 160V 407 100 0402 ZENER DIODE MTZJ36C C625 403 266 5008 CERAMIC 2700P K D504...
  • Page 28 T601 645 063 6417 TRANS, POWER, PULSE R410 401 062 5109 OXIDE-MT 56 JA R411 401 063 2008 OXIDE-MT 6.8K JA MISCELLANEOUS R412 401 024 9701 CARBON 12K JA 1/6W A401 610 310 6816 ASSY, PWB, P/D-H3ELM — 28 —...
  • Page 29 Schematic Schematic Part No. Part No. Description Description Location Location FRONT PC BOARD TRANSISTORS Q001 405 011 8401 TR 2SC1740S-Q CAPACITORS 405 011 8500 TR 2SC1740S-R C001 404 084 3900 ELECT 10U M 405 011 8609 TR 2SC1740S-S C006 404 084 4204 ELECT 4.7U M 405 012 2002...
  • Page 30 Schematic Schematic Part No. Part No. Description Description Location Location SW1904 645 006 9673 SWITCH, PUSH (CH C1281 403 279 0106 CERAMIC 0.1U Z 645 027 7382 SWITCH, PUSH (CH C1282 404 084 2804 ELECT 100U M 645 052 2284 SWITCH, PUSH (CH C1283 404 084 2804...
  • Page 31 Schematic Schematic Part No. Part No. Description Description Location Location C7140 404 084 2507 ELECT 47U M IC7103 409 517 6107 IC UPC2925T-E2 C7146 403 279 0106 CERAMIC 0.1U Z IC8201 409 449 2901 IC CXA2019AQ C7147 404 084 2507 ELECT 47U M IC8230...
  • Page 32 Schematic Schematic Part No. Part No. Description Description Location Location Q1223 405 134 5925 TR 2SA1037AK T146 R 405 173 9803 TR 2SC3928A1R 405 147 2205 TR 2SA1037AK T146 S 405 173 9902 TR 2SC3928A1S 405 002 0308 TR 2SA1037K-T-96-R Q7012 405 134 5925 TR 2SA1037AK T146 R...
  • Page 33 Schematic Schematic Part No. Part No. Description Description Location Location Q7030 405 134 5925 TR 2SA1037AK T146 R Q7100 405 134 5925 TR 2SA1037AK T146 R 405 147 2205 TR 2SA1037AK T146 S 405 147 2205 TR 2SA1037AK T146 S 405 002 0308 TR 2SA1037K-T-96-R 405 002 0308...
  • Page 34 Schematic Schematic Part No. Part No. Description Description Location Location 405 173 9803 TR 2SC3928A1R 405 173 9803 TR 2SC3928A1R 405 173 9902 TR 2SC3928A1S 405 173 9902 TR 2SC3928A1S Q8234 405 014 4509 TR 2SC2412K-T-96-R RESISTOR 405 014 4608 TR 2SC2412K-T-96-S R1001 401 256 2709...
  • Page 35 Schematic Schematic Part No. Part No. Description Description Location Location R7010 401 150 6209 MT-GLAZE 1K JA 1/10W R8215 401 256 4109 MT-GLAZE 56 JA 1/10W R7011 401 162 3708 MT-GLAZE 4.7K JA 1/10W R8216 401 256 4109 MT-GLAZE 56 JA 1/10W R7012 401 162 4002 MT-GLAZE...
  • Page 36 Schematic Schematic Part No. Part No. Description Description Location Location C2330 404 084 2903 ELECT 1000U M C2545 404 087 1200 ELECT 0.1U M C2331 404 084 2705 ELECT 10U M C2613 404 084 2804 ELECT 100U M C2332 404 084 3801 ELECT 1U M DIODES...
  • Page 37 Schematic Schematic Part No. Part No. Description Description Location Location Q2333 405 134 5925 TR 2SA1037AK T146 R Q2506 405 014 4509 TR 2SC2412K-T-96-R 405 147 2205 TR 2SA1037AK T146 S 405 014 4608 TR 2SC2412K-T-96-S 405 002 0308 TR 2SA1037K-T-96-R 405 015 8724 TR 2SC2812-L6-TB 405 002 0407...
  • Page 38 Schematic Schematic Part No. Part No. Description Description Location Location R2348 401 255 6500 MT-GLAZE 100 JA 1/10W MISCELLANEOUS R2349 401 256 5908 MT-GLAZE 2.7K JA 1/10W A4351 610 310 1798 ASSY, PWB, VIDEO-H3ABM R2350 401 255 6500 MT-GLAZE 100 JA 1/10W X2301 645 047 2794 OSC, CERAMIC 2.696MHZ...
  • Page 39 Schematic Schematic Part No. Part No. Description Description Location Location TRANSISTORS RESISTORS Q711 405 011 8401 TR 2SC1740S-Q R701 401 012 4503 CARBON 100 JA 1/4W 405 011 8500 TR 2SC1740S-R R702 401 012 4503 CARBON 100 JA 1/4W 405 011 8609 TR 2SC1740S-S R703 401 012 4503...
  • Page 40 Schematic Schematic Part No. Part No. Description Description Location Location VELOCITY MODULATION PC BOARD 405 157 0505 TR 2SC536NF-NPA 405 151 8705 TR 2SC536NG-NPA CAPACITORS 405 020 7501 TR 2SC945A-PA C1705 404 092 1905 ELECT 100U M 405 020 7709 TR 2SC945A-QA C1711 403 057 3107...

  • Page 41: Cabinet Parts List

    CABINET BACK-H3GLM 412 064 4304 SCREW 4X14 (9 USED) 411 026 2303 SCREW 3X10 (4 USED) 610 313 2440 DEC AV SHEET-H3ELM 610 311 6402 CHASSIS RAIL- (3) G7FAM 610 311 9908 ASSY, BUTTON UNIT-G7FAM 610 289 5148 CAP RC-G8EAM...

  • Page 42: Component And Testpoint Locations

    COMPONENT AND TESTPOINT LOCATIONS MAIN BOARD PARTS SIDE J1601 J1267 J845 J1602 K9FRA IC661 J822 K9FRB L652 C3415 J663 J823 C662 J1613 J1604 J815 J3405 J824 J3406 C3412 J1605 J816 D661 J3419 C3410 J817 J3403 9VTV-PF L803 J3415 J818 R3426 C661 J801 C865...
  • Page 43 MAIN BOARD FOIL SIDE J1267 J1601 J687 J845 J1602 J822 IC661 J683 K9FRB K9FRA C662 J823 R3417 J663 C663 J1613 J3405 J815 C3415 J3406 J871 J1604 JP3402 R822 J816 C3412 J824 D661 J1605 J3419 J3415 J3418 R3416 J3403 J817 C3410 R3426 R3415 D3416...
  • Page 44 COMPONENT AND TESTPOINT LOCATIONS (Cont.) POWER / DEFLECTION BOARD PARTS SIDE PB401A C634 R644 R645 K6GND4 C635 J644 Q641 J640 Q643 C635A D645 J648 J643 D625 D612 C649 J641 R643 K6B3P K6B2P K6B1P C684 R642 R616 R641 J647 C642 D613 D614 C632 R605...
  • Page 45 POWER / DEFLECTION BOARD FOIL SIDE R644 C634 R645 K6GND4 PB401A IC601 C635 J644 C635A Q641 J640 Q643 K6B2P K6B3P D625H1 J648 C649 D645 J643 J641 K6L1P K6B1P D612 C684 R643 D625 J647 R616 R641 L625 R642 C632 D614 L628 C632A R605 J621...
  • Page 46 COMPONENT AND TESTPOINT LOCATIONS (Cont.) CRT SOCKET BOARD PARTS SIDE IC711H2 K7CP1 200V R746 K7CP2 HEATER K7U1 K7CP3 IC731H2 TP47R TP47B IC711H1 SCREEN TP47G IC721H2 TE47 IC731H1 K7Y1 K702 TPIK IC721H1 1AA4B10B0960A VM BOARD PARTS SIDE K17A C1719 C1721 R1743 C1722 C1702 C1726...
  • Page 47 AV BOARD R7049 Y-OUT-ADJ R7048 C7023 C7135 C7126 C7133 C7030 C7041 IC7101 C7021 T7030 IC7102 IC7103 L7003 C7034 Q7036 R7036 C7038 D7101 C7116 L7007 C1238 R8234 C8232 T7010 R8235 L7102 IC8230 L7112 'PWB,AV-H3ABM B10B1030A R1063 R1057 R1059 D1054 IC1201 D1057 D1055 R1065 C1057...
  • Page 48 COMPONENT AND TESTPOINT LOCATIONS (Cont.) VIDEO BOARD B10B1030B PWB,VIDEO-H3ABM J2501 Q2504 C2512 J2502 R2516 C2511 R2515 R2514 R2513 R2375 R2377 IC2502 C2371 K25A R2376 R2373 R2378 IC2371 R2343 IC2301 R2344 R2330 R2345 R2360 R2329 Q2505 R2361 C2517 Q2506 D2503 D2502 D2501 C2503 IC2501...
  • Page 49 COMPONENT AND TESTPOINT LOCATIONS (Cont.) FRONT PWB PARTS SIDE A1901 SW1901 SW1902 SW1903 SW1904 SW1905 SW1906 PB1901A 6A 125V J1901 D1901 L1902 LF602 LF601 R1903 T681 R1904 R1905 R1906 D1902 R1902 R1907 C1904 C1902 C1613 T681A JP601 C1901 R1910 C1620 C1614 KFRONT2 R1901...

  • Page 50: Block Diagrams

    POWER LINES — 50 —...
  • Page 51 MAIN CPU DATA BUS LINES — 51 —...
  • Page 52 SIGNAL LINES — 52 —...
  • Page 53 IC2501 CRT DRIVER BLOCK DIAGRAM — 53 —...
  • Page 54 IC3601 AUDIO PROCESSOR BLOCK DIAGRAM — 54 —...
  • Page 55 IC3401 AUDIO CONTROL BLOCK DIAGRAM TONE TONE SR FIL OUTa LINEa MONa IN1a IN2a 2 VOL 1 TONE VOL 2 IN3a 3 IN4a 4 NJRC IICBUS Surround Interface "eala" & Simulated Stereo IN1b IN2b 29 VOL 1 VOL 2 TONE IN3b 28 IN4b 27 Bias...

  • Page 56: Troubleshooting Flow Charts

    TROUBLESHOOTING FLOW CHARTS NO POWER Check: • PS601 (Posistor), Fuse (F601) open? D601, IC601, IC602 (Q402: H-out Tr) Check: the voltage of T681 • R601 (Rush Resistor) supplied? Check: Is the 39pin of • "5V" Line (from IC1611 to IC801[22pin]), IC801(CPU) output •...
  • Page 57 NO PICTURE Check: Line: Main to AV RF only All Modes? A101 (TU_IF) 17pin - IC1201 41pin Parts: TU_IF Check: Line: AV AV1 only IC1201 1pin (Composite Video) IC1201 3pin (S-Input: Y) IC1201 5pin (S-Input: C) Check: AV2 only Line: AV IC1201 7pin (Composite Video) (Composite Video IC1201 9pin (S-Input: Y)

  • Page 58: No Sound

    TROUBLE SHOOTING FLOW CHARTS (Cont.) NO SOUND Is there Check: signal at speaker Speaker (SP901, SP902) terminal? Is there signal at IC001 10pin (L) Check: or 8pin (R)? Line: Front - Main (Mute) IC001 1pin - IC801 (CPU) 2pin Parts: IC001 (Audio AMP.), Q001 Check: Is there Line: Main (IIC Bus)

  • Page 59: Control Port Function

    CONTROL PORT FUNCTION System Control (CPU : IC801) Pin Name Function I/O Description P11/SCL1 IIC bus clock for TV Audio AMP Mute Active : High DM Reset Out Reset Out : Low BPF-SW Active : High P03/AD1 Key In P04/PWM4/AD2 AV SW 2 Active : High P05/AD3 AFT S-IN...
  • Page 60 For parts or service contact SANYO Fisher Service Corporation 21605 Plummer Street Chatsworth, CA 91311 (U.S.A.) 300 Applewood Crescent, Concord, Ontario L4K 5C7 (CANADA) March / 2004 / 2000 SMC Printed in U.S.A. — 60 —...

  • Page 61: Schematic Inserts

    MODEL HT32744 Chassis No. 32744-00 SCHEMATIC DIAGRAMS BOARD CONNECTIONS SP-L AND LOCATIONS SP901 NOTES ON SCHEMATIC DIAGRAMS K6GND KFRONT KFRONT2 K1903 W601 1. All resistance values in ohms K=1,000 M=1,000,000. ASSY,PWB,FRONT (FOR SPARK) 2. Unless otherwise noted on schematic, all capacitor values less than 1 are expressed in µF (Micro Farad), L901 K1904 SP-R...

  • Page 62: Board Connections & Locations. 62 - 64 Waveforms

    MODEL HT32744 Chassis No. 32744-00 K9FRB ASSY,PWB,MAIN K9FRA R3423 1/10GJ 10KC Q3420 R3424 R3426 KSLR2 R3425 IC801 1/10GJ R3422 L801 1/10GJ 5VAL R3412 C822 10KC C3435 C862 M37151MA 1/10GJ 6.3EM 10KC SWD_R Reset L802 25EM R3434 K1002 L803 Q3410 0.01 LBWA LBWA 1/10GJ...
  • Page 63 MODEL HT32744 Chassis No. 32744-00 R1058 R1059 C1235 C1236 1/10GJ 1/10GJ1KC 22KC AV Selector 25KZ 10EM 0.1LZF 470LBWA D1054 TV_L IC1201 L7112 K1051 3.3V R1051 R1052 C1054 MM1313BD R7107 1/10 1/10GJ 25KZ R1206 GJ75C 220C C1206 SCL_AV 1/10GJ100C 0.1LZF 1/10GJ L7165 KK330 2.2KC...
  • Page 64 MODEL HT32744 Chassis No. 32744-00 K6GND RC Pre AMP KFRONT D1902 T681 KFRONT2 Reg. (5V) C610 L1902 A1901 C601 275GM 0.1VDB IC1611 D1614 D1612 U20B40500 275GM VA601 W601 0.22VDC PQ050EA1MXP 5V_AL F601A L1901 F601B F601 C1903 C1614 C1620 C1613 6A125VT C1615 LF602 LF601...

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